Bump MudBlazor from 6.20.0 to 8.13.0

---
updated-dependencies:
- dependency-name: MudBlazor
  dependency-version: 8.13.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/GIB/GIB.csproj

@@ -10,7 +10,7 @@
     <PackageReference Include="Blazored.LocalStorage" Version="4.5.0" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="9.0.9" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="9.0.9" PrivateAssets="all" />
-    <PackageReference Include="MudBlazor" Version="6.20.0" />
+    <PackageReference Include="MudBlazor" Version="8.13.0" />
   </ItemGroup>
 
 </Project>